Figure 2

Distribution of Indels Among Different Genome and Core Indel Classes. Frequency of the three core indel classes: approximate, exact, and unique, are contrasted in the observed and resampled datasets (orange bars) There is an excess of observed approximate and exact indels, and a shortage of unique indels compared to the expected values for chromosome 22 (LR χ², d.f. = 2, χ² = 916, p < 0.0001). Colours within the bars representing observed data indicate the relative frequency of the three genome classes (chromosome-multiple, chromosome-unique, and genome-unique). The distribution of core indel types among the genome classes is not random with majority represented by genome-unique indels (LR χ², d.f. = 4, χ² = 23.28, p = 0.0001, Table S2.1A) (see Additional file 1)).